body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f0f0f0;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 20px auto;
    background-color: #fff;
    padding: 20px;
    box-shadow: 0 0 5px rgba(0, 0, 0, 0.1);
}
/* 导航栏1 */
.navBar {
  background-color: #0a2536;
  height: 50px;
  padding-left: 20px;
}
.titleLeft {
  float: left;
}
.titleRight {
  float: right;
}
.titleRight img {
  margin-right: 20px;
  height: 50px;
}
.titleLink {
  color: white;
  text-decoration: none;
  line-height: 50px;
  font-size: larger;
  margin-right: 20px;
}
/* 导航栏2 */
.navBar2 {
  background: linear-gradient(to right, #ede910, #11e589);
  height: 50px;
  padding-left: 20px;
}
.titleLink2 {
  color: black;
  text-decoration: none;
  line-height: 50px;
  margin-right: 20px;
}
.titleLink2 span {
  color: rgb(45, 114, 188);
  vertical-align: middle;
}

.video-player video {
    width: 100%;
    height: auto;
}

.video-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 10px;
}

.video-stats span {
    margin-right: 15px;
    color: #555;
}

.related-section {
    display: flex;
    margin-top: 20px;
}

.related-videos {
    flex: 2;
    margin-right: 20px;
}

.video-list {
    display: flex;
    flex-wrap: wrap;
}

.video-list img {
    width: calc(33.33% - 10px);
    margin: 5px;
    height: auto;
}

.video-info {
    flex: 1;
    margin-right: 20px;
}

.video-info p {
    line-height: 1.6;
    color: #333;
}

.more {
    color: #007bff;
    text-decoration: none;
}

.selected-activities {
    flex: 1;
}

.activity-list img {
    width: 100%;
    margin-bottom: 10px;
    height: auto;
}

.comment-section {
    margin-top: 20px;
}

.comment-section textarea {
    width: 100%;
    height: 100px;
    padding: 10px;
    margin-bottom: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.submit-comment {
    background-color: #007bff;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
}

.submit-comment:hover {
    background-color: #0056b3;
}

footer {
  background-color: #003366;
  color: #fff;
  text-align: center;
  padding: 20px 0;
  margin-top: 50px;
}